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CVE-2026-82653— SiYuan before v3.8.1 Stored XSS via confirmDialog

Quick assessment

Affected
siyuan-note siyuan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

思远（SiYuan）在 v3.8.1 之前版本中存在一个存储型跨站脚本（XSS）漏洞，位于 函数中。该漏洞的成因是：包名称和笔记本名称未经过转义处理，直接被插入到 赋值中。攻击者可以提交恶意的应用市场（Bazaar）包，在其名称字段中嵌入 HTML/脚本载荷。当用户卸载这些包或解锁加密笔记本时，这些脚本会在用户的浏览器中执行。

CVSS 8.9 · High
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I. Basic Information for CVE-2026-82653

Vulnerability Information
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Vulnerability Title
SiYuan before v3.8.1 Stored XSS via confirmDialog
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan before v3.8.1 contains a stored cross-site scripting vulnerability in confirmDialog() where unescaped package names and notebook names are interpolated directly into innerHTML assignments. Attackers can submit malicious bazaar packages with HTML/script payloads in the name field that execute in users' browsers when uninstalling packages or unlocking encrypted notebooks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
siyuan-note siyuan 0 ~ 3.8.1 -

II. Public POCs for CVE-2026-82653

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III. Intelligence Information for CVE-2026-82653

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Vendor Advisories for CVE-2026-82653 (2)

Same Patch Batch · siyuan-note · 2026-08-30 · 6 CVEs total

CVE-2026-82654 8.9 HIGH SiYuan before v3.8.1 Stored XSS via block name
CVE-2026-82649 7.0 HIGH SiYuan before 3.8.1 Local Privilege Escalation via Uncontrolled Search Path
CVE-2026-82652 5.3 MEDIUM SiYuan before v3.8.1 Information Disclosure via Publish Access
CVE-2026-82651 4.9 MEDIUM SiYuan before v3.8.1 Missing Authorization via /history and /repo/diff
CVE-2026-82650 4.4 MEDIUM SiYuan before v3.8.1 Path Traversal via /api/template/render

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-79

V. Comments for CVE-2026-82653

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